Improve CI workflow #1

	name: Integrate

	on:
	pull_request: null

	jobs:
	cs:
	name: Coding Standards
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Install PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.1'
	coverage: none

	- name: Install dependencies
	run: composer update --prefer-dist --no-progress

	- name: Run PHP CS Fixer
	run: composer run cs

	tests:
	name: Unit Tests
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php-versions: ['8.0', '8.1', '8.2']

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Install PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-versions }}

	- name: Install dependencies
	run: composer update --prefer-dist --no-progress

	- name: Execute unit tests
	run: composer run test

	stan:
	name: Static Analysis
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Install PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.0'

	- name: Install dependencies
	run: composer update --prefer-dist --no-progress

	- name: Run PHPStan
	run: composer run stan

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